The truth is, many people sell you dreams with bots and apps that promise free followers, but it's all just a pipe dream, these tools are almost always scams designed to steal your data or fill your account with fake profiles, and all you end up doing is getting shadowbanned or having your account deleted by tiktok, it's a waste of time and risking everything you've built for nothing.
The current algorithm rewards retention above all else, the key is to create content that grabs viewers from the first few seconds and keeps them watching until the end, the completion rate is one of the most important factors for a video to go viral, today, fake followers not only don't help you, but they also lower your engagement rate and tell the algorithm that your content is bad, creating a cycle of failure for your reach.
The way to grow without paying is to play by the algorithm's rules, focus on a very specific niche, use keywords in your video descriptions because tiktok works like a search engine, and upload content that people want to share or save, it also helps to interact a lot in the comments of other creators' videos in your niche, it's slower than buying followers, but it's the only way to build a community that truly makes a difference